This site is supported by donations to The OEIS Foundation.

 Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A178299 Number of collinear point 4-tuples in a 6 X 6 X 6 X... n-dimensional cubic grid 0
 0, 15, 234, 2820, 31176, 333840, 3546144, 37807680, 406924416, 4432154880 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Index entries for linear recurrences with constant coefficients, signature (36, -476, 2736, -5760) conjectured. FORMULA Conjecture: a(n) = 3*8^n+3*10^n/2-5*6^n+12^n/2. a(n)= 36*a(n-1) -476*a(n-2) +2736*a(n-3) -5760*a(n-4). G.f.: 3*x*(5-102*x+512*x^2)/((12*x-1)*(6*x-1)*(8*x-1)*(10*x-1)). [R. J. Mathar May 24 2010] CROSSREFS Sequence in context: A250418 A231411 A097185 * A097582 A057007 A209118 Adjacent sequences:  A178296 A178297 A178298 * A178300 A178301 A178302 KEYWORD nonn AUTHOR R. H. Hardin, suggested by R. J. Mathar in the Sequence Fans Mailing List, May 24 2010 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.